//
//  Calculator.h
//  Masonry-Exploration
//
//  Created by John on 2018/5/3.
//  Copyright © 2018年 HR Inc. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Calculator : NSObject

@property (nonatomic, assign) int result;

-(Calculator *(^)(int num))add;
-(Calculator *(^)(int num))minus;


@end
